The problem with consequentialist ethics is that you cannot know all the consequences of your acts. Any rule that it applies to a specific case can only have uncertain outcomes. Indeed the rule itself will be arbitrary depending on the horizon chosen for projecting forward in time. So, it is better to choose a rule that is determined as good in itself, that is a deontological one. If you were able to see through to all consequences of your action to the limit of time then you would naturally be a consequentialist and your deontological rule would stand exposed as an heuristic for dealing with the in-principle uncertainty of the natural stance. In a theistic universe God could function precisely to inform the conscience of one whose faith was open to such a communication of what the best action would be if all consequences were revealed. In this sense God would analogous to knowledge of the solution to the halting problem. As a corollary such a God, who can only be known by faith, would underwrite personhood. Trans-temporal wisdom is sufficient for drawing the same conclusion.